searcher

package
v1.0.9 Latest Latest
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 Go to latest Published: May 26, 2020 License: Apache-2.0 Imports: 14 Imported by: 39

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var DisjunctionHeapTakeover = 10

DisjunctionHeapTakeover is a compile time setting that applications can adjust to control when the DisjunctionSearcher will switch from a simple slice implementation to a heap implementation.

View Source 
var DisjunctionMaxClauseCount = 0

DisjunctionMaxClauseCount is a compile time setting that applications can adjust to non-zero value to cause the DisjunctionSearcher to return an error instead of exeucting searches when the size exceeds this value.

View Source 
var GeoBitsShift1 = (geo.GeoBits << 1)
View Source 
var GeoBitsShift1Minus1 = GeoBitsShift1 - 1
View Source 
var MaxFuzziness = 2

Functions

func ComputeGeoRange 

func ComputeGeoRange(term uint64, shift uint,
	sminLon, sminLat, smaxLon, smaxLat float64, checkBoundaries bool,
	indexReader index.IndexReader, field string) (
	onBoundary [][]byte, notOnBoundary [][]byte, err error)

func NewConjunctionSearcher 

func NewConjunctionSearcher(indexReader index.IndexReader,
	qsearchers []search.Searcher, options search.SearcherOptions) (
	search.Searcher, error)

func NewDisjunctionSearcher 

func NewDisjunctionSearcher(indexReader index.IndexReader,
	qsearchers []search.Searcher, min float64, options search.SearcherOptions) (
	search.Searcher, error)

func NewFuzzySearcher 

func NewFuzzySearcher(indexReader index.IndexReader, term string,
	prefix, fuzziness int, field string, boost float64,
	options search.SearcherOptions) (search.Searcher, error)

func NewGeoBoundedPolygonSearcher added in v0.8.1 

func NewGeoBoundedPolygonSearcher(indexReader index.IndexReader,
	polygon []geo.Point, field string, boost float64,
	options search.SearcherOptions) (search.Searcher, error)

func NewGeoBoundingBoxSearcher 

func NewGeoBoundingBoxSearcher(indexReader index.IndexReader, minLon, minLat,
	maxLon, maxLat float64, field string, boost float64,
	options search.SearcherOptions, checkBoundaries bool) (
	search.Searcher, error)

func NewGeoPointDistanceSearcher 

func NewGeoPointDistanceSearcher(indexReader index.IndexReader, centerLon,
	centerLat, dist float64, field string, boost float64,
	options search.SearcherOptions) (search.Searcher, error)

func NewMultiTermSearcher 

func NewMultiTermSearcher(indexReader index.IndexReader, terms []string,
	field string, boost float64, options search.SearcherOptions, limit bool) (
	search.Searcher, error)

func NewMultiTermSearcherBytes 

func NewMultiTermSearcherBytes(indexReader index.IndexReader, terms [][]byte,
	field string, boost float64, options search.SearcherOptions, limit bool) (
	search.Searcher, error)

func NewNumericRangeSearcher 

func NewNumericRangeSearcher(indexReader index.IndexReader,
	min *float64, max *float64, inclusiveMin, inclusiveMax *bool, field string,
	boost float64, options search.SearcherOptions) (search.Searcher, error)

func NewRegexpSearcher 

func NewRegexpSearcher(indexReader index.IndexReader, pattern index.Regexp,
	field string, boost float64, options search.SearcherOptions) (
	search.Searcher, error)

NewRegexpSearcher creates a searcher which will match documents that contain terms which match the pattern regexp. The match must be EXACT matching the entire term. The provided regexp SHOULD NOT start with ^ or end with $ as this can intefere with the implementation. Separately, matches will be checked to ensure they match the entire term.

func NewRegexpStringSearcher added in v0.8.0 

func NewRegexpStringSearcher(indexReader index.IndexReader, pattern string,
	field string, boost float64, options search.SearcherOptions) (
	search.Searcher, error)

NewRegexpStringSearcher is similar to NewRegexpSearcher, but additionally optimizes for index readers that handle regexp's.

func NewTermPrefixSearcher 

func NewTermPrefixSearcher(indexReader index.IndexReader, prefix string,
	field string, boost float64, options search.SearcherOptions) (
	search.Searcher, error)

func NewTermRangeSearcher 

func NewTermRangeSearcher(indexReader index.IndexReader,
	min, max []byte, inclusiveMin, inclusiveMax *bool, field string,
	boost float64, options search.SearcherOptions) (search.Searcher, error)

Types

type BooleanSearcher 

type BooleanSearcher struct {
	// contains filtered or unexported fields
}

func NewBooleanSearcher 

func NewBooleanSearcher(indexReader index.IndexReader, mustSearcher search.Searcher, shouldSearcher search.Searcher, mustNotSearcher search.Searcher, options search.SearcherOptions) (*BooleanSearcher, error)

func (*BooleanSearcher) Advance 

func (s *BooleanSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*BooleanSearcher) Close 

func (s *BooleanSearcher) Close() error

func (*BooleanSearcher) Count 

func (s *BooleanSearcher) Count() uint64

func (*BooleanSearcher) DocumentMatchPoolSize 

func (s *BooleanSearcher) DocumentMatchPoolSize() int

func (*BooleanSearcher) Min 

func (s *BooleanSearcher) Min() int

func (*BooleanSearcher) Next 

func (s *BooleanSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error)

func (*BooleanSearcher) SetQueryNorm 

func (s *BooleanSearcher) SetQueryNorm(qnorm float64)

func (*BooleanSearcher) Size added in v0.8.0 

func (s *BooleanSearcher) Size() int

func (*BooleanSearcher) Weight 

func (s *BooleanSearcher) Weight() float64

type ConjunctionSearcher 

type ConjunctionSearcher struct {
	// contains filtered or unexported fields
}

func (*ConjunctionSearcher) Advance 

func (s *ConjunctionSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*ConjunctionSearcher) Close 

func (s *ConjunctionSearcher) Close() (rv error)

func (*ConjunctionSearcher) Count 

func (s *ConjunctionSearcher) Count() uint64

func (*ConjunctionSearcher) DocumentMatchPoolSize 

func (s *ConjunctionSearcher) DocumentMatchPoolSize() int

func (*ConjunctionSearcher) Min 

func (s *ConjunctionSearcher) Min() int

func (*ConjunctionSearcher) Next 

func (s *ConjunctionSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error)

func (*ConjunctionSearcher) SetQueryNorm 

func (s *ConjunctionSearcher) SetQueryNorm(qnorm float64)

func (*ConjunctionSearcher) Size added in v0.8.0 

func (s *ConjunctionSearcher) Size() int

func (*ConjunctionSearcher) Weight 

func (s *ConjunctionSearcher) Weight() float64

type DisjunctionHeapSearcher added in v0.8.0 

type DisjunctionHeapSearcher struct {
	// contains filtered or unexported fields
}

func (*DisjunctionHeapSearcher) Advance added in v0.8.0 

func (s *DisjunctionHeapSearcher) Advance(ctx *search.SearchContext,
	ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*DisjunctionHeapSearcher) Close added in v0.8.0 

func (s *DisjunctionHeapSearcher) Close() (rv error)

func (*DisjunctionHeapSearcher) Count added in v0.8.0 

func (s *DisjunctionHeapSearcher) Count() uint64

func (*DisjunctionHeapSearcher) DocumentMatchPoolSize added in v0.8.0 

func (s *DisjunctionHeapSearcher) DocumentMatchPoolSize() int

func (*DisjunctionHeapSearcher) Len added in v0.8.0 

func (s *DisjunctionHeapSearcher) Len() int

func (*DisjunctionHeapSearcher) Less added in v0.8.0 

func (s *DisjunctionHeapSearcher) Less(i, j int) bool

func (*DisjunctionHeapSearcher) Min added in v0.8.0 

func (s *DisjunctionHeapSearcher) Min() int

func (*DisjunctionHeapSearcher) Next added in v0.8.0 

func (s *DisjunctionHeapSearcher) Next(ctx *search.SearchContext) (
	*search.DocumentMatch, error)

func (*DisjunctionHeapSearcher) Optimize added in v0.8.0 

func (s *DisjunctionHeapSearcher) Optimize(kind string, octx index.OptimizableContext) (
	index.OptimizableContext, error)

a disjunction searcher implements the index.Optimizable interface but only activates on an edge case where the disjunction is a wrapper around a single Optimizable child searcher

func (*DisjunctionHeapSearcher) Pop added in v0.8.0 

func (s *DisjunctionHeapSearcher) Pop() interface{}

func (*DisjunctionHeapSearcher) Push added in v0.8.0 

func (s *DisjunctionHeapSearcher) Push(x interface{})

func (*DisjunctionHeapSearcher) SetQueryNorm added in v0.8.0 

func (s *DisjunctionHeapSearcher) SetQueryNorm(qnorm float64)

func (*DisjunctionHeapSearcher) Size added in v0.8.0 

func (s *DisjunctionHeapSearcher) Size() int

func (*DisjunctionHeapSearcher) Swap added in v0.8.0 

func (s *DisjunctionHeapSearcher) Swap(i, j int)

func (*DisjunctionHeapSearcher) Weight added in v0.8.0 

func (s *DisjunctionHeapSearcher) Weight() float64

type DisjunctionSliceSearcher added in v0.8.0 

type DisjunctionSliceSearcher struct {
	// contains filtered or unexported fields
}

func (*DisjunctionSliceSearcher) Advance added in v0.8.0 

func (s *DisjunctionSliceSearcher) Advance(ctx *search.SearchContext,
	ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*DisjunctionSliceSearcher) Close added in v0.8.0 

func (s *DisjunctionSliceSearcher) Close() (rv error)

func (*DisjunctionSliceSearcher) Count added in v0.8.0 

func (s *DisjunctionSliceSearcher) Count() uint64

func (*DisjunctionSliceSearcher) DocumentMatchPoolSize added in v0.8.0 

func (s *DisjunctionSliceSearcher) DocumentMatchPoolSize() int

func (*DisjunctionSliceSearcher) Min added in v0.8.0 

func (s *DisjunctionSliceSearcher) Min() int

func (*DisjunctionSliceSearcher) Next added in v0.8.0 

func (s *DisjunctionSliceSearcher) Next(ctx *search.SearchContext) (
	*search.DocumentMatch, error)

func (*DisjunctionSliceSearcher) Optimize added in v0.8.0 

func (s *DisjunctionSliceSearcher) Optimize(kind string, octx index.OptimizableContext) (
	index.OptimizableContext, error)

a disjunction searcher implements the index.Optimizable interface but only activates on an edge case where the disjunction is a wrapper around a single Optimizable child searcher

func (*DisjunctionSliceSearcher) SetQueryNorm added in v0.8.0 

func (s *DisjunctionSliceSearcher) SetQueryNorm(qnorm float64)

func (*DisjunctionSliceSearcher) Size added in v0.8.0 

func (s *DisjunctionSliceSearcher) Size() int

func (*DisjunctionSliceSearcher) Weight added in v0.8.0 

func (s *DisjunctionSliceSearcher) Weight() float64

type DocIDSearcher 

type DocIDSearcher struct {
	// contains filtered or unexported fields
}

DocIDSearcher returns documents matching a predefined set of identifiers.

func NewDocIDSearcher 

func NewDocIDSearcher(indexReader index.IndexReader, ids []string, boost float64,
	options search.SearcherOptions) (searcher *DocIDSearcher, err error)

func (*DocIDSearcher) Advance 

func (s *DocIDSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*DocIDSearcher) Close 

func (s *DocIDSearcher) Close() error

func (*DocIDSearcher) Count 

func (s *DocIDSearcher) Count() uint64

func (*DocIDSearcher) DocumentMatchPoolSize 

func (s *DocIDSearcher) DocumentMatchPoolSize() int

func (*DocIDSearcher) Min 

func (s *DocIDSearcher) Min() int

func (*DocIDSearcher) Next 

func (s *DocIDSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error)

func (*DocIDSearcher) SetQueryNorm 

func (s *DocIDSearcher) SetQueryNorm(qnorm float64)

func (*DocIDSearcher) Size added in v0.8.0 

func (s *DocIDSearcher) Size() int

func (*DocIDSearcher) Weight 

func (s *DocIDSearcher) Weight() float64

type FilterFunc 

type FilterFunc func(d *search.DocumentMatch) bool

FilterFunc defines a function which can filter documents returning true means keep the document returning false means do not keep the document

type FilteringSearcher 

type FilteringSearcher struct {
	// contains filtered or unexported fields
}

FilteringSearcher wraps any other searcher, but checks any Next/Advance call against the supplied FilterFunc

func NewFilteringSearcher 

func NewFilteringSearcher(s search.Searcher, filter FilterFunc) *FilteringSearcher

func (*FilteringSearcher) Advance 

func (f *FilteringSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*FilteringSearcher) Close 

func (f *FilteringSearcher) Close() error

func (*FilteringSearcher) Count 

func (f *FilteringSearcher) Count() uint64

func (*FilteringSearcher) DocumentMatchPoolSize 

func (f *FilteringSearcher) DocumentMatchPoolSize() int

func (*FilteringSearcher) Min 

func (f *FilteringSearcher) Min() int

func (*FilteringSearcher) Next 

func (f *FilteringSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error)

func (*FilteringSearcher) SetQueryNorm 

func (f *FilteringSearcher) SetQueryNorm(n float64)

func (*FilteringSearcher) Size added in v0.8.0 

func (f *FilteringSearcher) Size() int

func (*FilteringSearcher) Weight 

func (f *FilteringSearcher) Weight() float64

type MatchAllSearcher 

type MatchAllSearcher struct {
	// contains filtered or unexported fields
}

func NewMatchAllSearcher 

func NewMatchAllSearcher(indexReader index.IndexReader, boost float64, options search.SearcherOptions) (*MatchAllSearcher, error)

func (*MatchAllSearcher) Advance 

func (s *MatchAllSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*MatchAllSearcher) Close 

func (s *MatchAllSearcher) Close() error

func (*MatchAllSearcher) Count 

func (s *MatchAllSearcher) Count() uint64

func (*MatchAllSearcher) DocumentMatchPoolSize 

func (s *MatchAllSearcher) DocumentMatchPoolSize() int

func (*MatchAllSearcher) Min 

func (s *MatchAllSearcher) Min() int

func (*MatchAllSearcher) Next 

func (s *MatchAllSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error)

func (*MatchAllSearcher) SetQueryNorm 

func (s *MatchAllSearcher) SetQueryNorm(qnorm float64)

func (*MatchAllSearcher) Size added in v0.8.0 

func (s *MatchAllSearcher) Size() int

func (*MatchAllSearcher) Weight 

func (s *MatchAllSearcher) Weight() float64

type MatchNoneSearcher 

type MatchNoneSearcher struct {
	// contains filtered or unexported fields
}

func NewMatchNoneSearcher 

func NewMatchNoneSearcher(indexReader index.IndexReader) (*MatchNoneSearcher, error)

func (*MatchNoneSearcher) Advance 

func (s *MatchNoneSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*MatchNoneSearcher) Close 

func (s *MatchNoneSearcher) Close() error

func (*MatchNoneSearcher) Count 

func (s *MatchNoneSearcher) Count() uint64

func (*MatchNoneSearcher) DocumentMatchPoolSize 

func (s *MatchNoneSearcher) DocumentMatchPoolSize() int

func (*MatchNoneSearcher) Min 

func (s *MatchNoneSearcher) Min() int

func (*MatchNoneSearcher) Next 

func (s *MatchNoneSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error)

func (*MatchNoneSearcher) SetQueryNorm 

func (s *MatchNoneSearcher) SetQueryNorm(qnorm float64)

func (*MatchNoneSearcher) Size added in v0.8.0 

func (s *MatchNoneSearcher) Size() int

func (*MatchNoneSearcher) Weight 

func (s *MatchNoneSearcher) Weight() float64

type OrderedSearcherList 

type OrderedSearcherList []search.Searcher

func (OrderedSearcherList) Len 

func (otrl OrderedSearcherList) Len() int

func (OrderedSearcherList) Less 

func (otrl OrderedSearcherList) Less(i, j int) bool

func (OrderedSearcherList) Swap 

func (otrl OrderedSearcherList) Swap(i, j int)

type PhraseSearcher 

type PhraseSearcher struct {
	// contains filtered or unexported fields
}

func NewMultiPhraseSearcher 

func NewMultiPhraseSearcher(indexReader index.IndexReader, terms [][]string, field string, options search.SearcherOptions) (*PhraseSearcher, error)

func NewPhraseSearcher 

func NewPhraseSearcher(indexReader index.IndexReader, terms []string, field string, options search.SearcherOptions) (*PhraseSearcher, error)

func (*PhraseSearcher) Advance 

func (s *PhraseSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*PhraseSearcher) Close 

func (s *PhraseSearcher) Close() error

func (*PhraseSearcher) Count 

func (s *PhraseSearcher) Count() uint64

func (*PhraseSearcher) DocumentMatchPoolSize 

func (s *PhraseSearcher) DocumentMatchPoolSize() int

func (*PhraseSearcher) Min 

func (s *PhraseSearcher) Min() int

func (*PhraseSearcher) Next 

func (s *PhraseSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error)

func (*PhraseSearcher) SetQueryNorm 

func (s *PhraseSearcher) SetQueryNorm(qnorm float64)

func (*PhraseSearcher) Size added in v0.8.0 

func (s *PhraseSearcher) Size() int

func (*PhraseSearcher) Weight 

func (s *PhraseSearcher) Weight() float64

type SearcherCurr added in v0.8.0 

type SearcherCurr struct {
	// contains filtered or unexported fields
}

type TermSearcher 

type TermSearcher struct {
	// contains filtered or unexported fields
}

func NewTermSearcher 

func NewTermSearcher(indexReader index.IndexReader, term string, field string, boost float64, options search.SearcherOptions) (*TermSearcher, error)

func NewTermSearcherBytes 

func NewTermSearcherBytes(indexReader index.IndexReader, term []byte, field string, boost float64, options search.SearcherOptions) (*TermSearcher, error)

func (*TermSearcher) Advance 

func (s *TermSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error)

func (*TermSearcher) Close 

func (s *TermSearcher) Close() error

func (*TermSearcher) Count 

func (s *TermSearcher) Count() uint64

func (*TermSearcher) DocumentMatchPoolSize 

func (s *TermSearcher) DocumentMatchPoolSize() int

func (*TermSearcher) Min 

func (s *TermSearcher) Min() int

func (*TermSearcher) Next 

func (s *TermSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error)

func (*TermSearcher) Optimize added in v0.8.0 

func (s *TermSearcher) Optimize(kind string, octx index.OptimizableContext) (
	index.OptimizableContext, error)

func (*TermSearcher) SetQueryNorm 

func (s *TermSearcher) SetQueryNorm(qnorm float64)

func (*TermSearcher) Size added in v0.8.0 

func (s *TermSearcher) Size() int

func (*TermSearcher) Weight 

func (s *TermSearcher) Weight() float64

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